Strap locking buckle



FIG. 1 is a perspective, view of a strap locking buckle showing my new design;

FIG. 2 is an enlarged front view thereof;

FIG. 3 is an enlarged rear view thereof;

FIG. 4 is an enlarged top view thereof, the bottom being a mirror image;

FIG. 5 is an enlarged right side view thereof, the left side being a mirror image;

FIG. 6 is a perspective view of a second embodiment of the design of FIG. 1;

FIG. 7 is an enlarged front view of FIG. 6;

FIG. 8 is an enlarged rear view of FIG. 6;

FIG. 9 is an enlarged top view of FIG. 6, the bottom being a mirror image;

FIG. 10 is an enlarged left side view of FIG. 6;

FIG. 11 is an enlarged right side view of FIG. 6. 

The ornamental design for a strap locking buckle, as shown and described. 